I would never wake a sleeping baby!

I dont have any experience with silent reflux, but babies sleep patterns change all the time, growth spurts, change of feeding patterns, change of seasons etc etc all impact.
I have never heard of 'enforced' play times, you baby is 9 weeks old, play with her when she is awake, stimulate her and talk and sing to her, but let her sleep when she needs too

Trust your instinct
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